22945

Appears in sequences

• Numbers that are the sum of 4 positive 7th powers.at n=24A003371
• Centered tetrahedral numbers.at n=32A005894
• Pseudoprimes to base 7.at n=31A005938
• a(n) = (2*n+1)*(11*n+1).at n=32A033575
• Least number requiring the base n to produce a prime by base reversal.at n=42A075244
• C(2*n+4,4)-C(2*n,4).at n=16A085474
• Values m_0 = 0, m_1, m_2, ... associated with divergent series T shown below.at n=2A092324
• Numbers of the form 4^j + 9^k, for j and k >= 0.at n=39A226828
• a(n) = n-th pseudoprime to base n.at n=40A247906
• Numbers z such that x^2 + y^8 = z^2 (with positive integers x and y) and gcd(x, y, z) = 1.at n=4A293695
• Numbers of the form a^7 + b^8, with integers a, b > 0.at n=11A303377
• Numbers of the form p*q*r where p, q, r are distinct primes congruent to 1 mod 4 such that Legendre(p/q) = Legendre(p/r) = Legendre(q/r) = -1.at n=21A323271